Blood Pressure/Vitals

First post here. I am curious of what your departments do for assessing blood pressure? We are a volunteer department that run medicals without transport. In the past, we have used the "at home" blood pressure monitors and we do manual BP as a backup. We go through these $30 BPM every few months. Curious if any of you have advice for brands or models that we should try, or if everyone sticks to doing manual BP's.